Heating-furnace



N. F. EGLER.

HEATING FUHNACE.

APPLICATION FILED AUG.29, I9I9.

Patented May 31, 1921.

INVENTOR lao NICKOLAS EGLER, 0F C HICAGO, ILLINOIS.

HEATING-FURNAGE.

Specification of Letters Patent.

APatented May ar, 1921.

Application led August 29, 1919.- Serial No. 320,602.

T 0 `all whom t my concern.:

Be it known that I, NIcKoLAs F. EGLER, a citizen of the' United States, residing at Chicago, in the county of `Cook and State lof Illinois, have invented anew and useful Improvement in Heating-Furnaces, of which the following is a full, clear, andexact description, reference being had to the accompanying drawing, forming part of this specication, in which- Figure l is a vertical longitudinal section 4through the chamber of a heating furnace embodying my invention.

Fig. 2 is a vertical section along the line II-II of Fig. 1.

Fig. 3 is a horizontal section through one of the bailles, and

Fig. 4 is a similar horizontal section showing@ modification.'

he present invention relates to heating furnaces, and more particularly to heating furnaces having elongated chambers into one end of which the gaseous fuel is introduced and burned, and from the other end of which the waste products of combustion escape. In this typeof furnace, particularly when used as a continuous furnace for heatingbillets or the like, the billets or workpiecesare pushed through the furnace along skid pipes which are near the bottom of the furnace. The hot gases of combustion tend to hug the roof of the furnace rather than go to the bottom of the furnace where the workpieces-are. The result is that the furnaces are uneconomically operated andl more fuel is burned than would be necessary if the current of gases were caused toflow along- .the bottom of the furnace where the work to be heated is.

Tol overcome this difficulty Ivhave pro-l .vided a baflle or baffles in the top of the f urnace chamber which keep the current of Lfurnace so that while the top tudinally of the furnace are theusual watercooled skid pipes 4 which are spaced from the bottom of the furnace, being mounted on supports 5, as illustrated. The workpieces, shown as billets 6, are supported on the skld pipes 4 and are pushed through. the furnace 1n the usual way. The fuel, which is usually gas, is supplied through a port or ports 7 at one end of the furnace. The hotk products of combustion-travel along the furnace and outl through a flue 8 to the stack. The furnace, as above described, is wellknown in this art,'and further details of its structure are unnecessary.

In this type of furnace the products of combustion tend to run along the roof of the of the furnace is maintained at an intense heat, the space at' the bottom of the furnace beneath the workpieces is much cooler. AIn order to di.

rect the current of hot gases from the top of the furnace to the region along the bottom ofthe furnace where the heating is to be done, I provide a baille or baffles across the top ofthe furnace chamber. In the drawings I have indicated two baflles 10. Each balfle .consists of an iron frame l1 filledwith 'lov rebrick 12. As shown in the drawing, the

frame 11 is water-cooled. Each baffle 10 depends through an opening through the roof of the furnace and is hung by a supporting cable 13 so as to be vertically ad- When small workpieces 'are to be justable. heated, the baflles or dampers may belowered and when larger workpieces are to -be heated, the baffles mayl be correspondingly raised. The baille or baffles 10 serve to deflect the stream of the hot gases of combustion from the roof ofthe furnace and cause them to travel along. the bottom of the furnace and under the work, so that the work is heated with a much less consumption of fuel.

lIn Figa. 3 I have illustrated a cross sect1on' ofl one of the ballies in which the frame com-- prises round water pipes 15 for supporting the brick work, while in Fig. 4 I have shown a modification in which square water pipes 16 with concave faces are used for support! ing the brick work of the baille. The brick work is preferred as the filler for the bafflev frame, but other refractory material might be used.

While, for the sake of illustration, I have shown the furnace as provided with two conditions.

vWhile I have illustrated and described i the preferred embodiment of my invention, it is to be understood that the invention is not limited to its illustrated embodiment, but may be embodied in other furnace structures Within the scope of the following claims.

I claim:

l. A heating furnace having a chamber along Which the hot gases of combustion travel, elevated tracks along Which the Workpieces travel through the furnace chamber, and means for deflecting the stream of hot gases from the furnace -roof toward the floor of the furnace and beneath the Workpieces, substantially as described.

2. A heating furnace having an elongated horizontal chamber along Which the hot gases of combustion travel longitudinally,

and a plurality or baffles along the top of the furnace to prevent the stream of hot gases from hugging the furnace roof, substantially as described.

8. A heating furnace having a chamber along which the hot gases of combustion travel, and a vertically adjustable bailie or baffles across the top of the furnace chamber, substantially as described.

4. A heating furnace having a chamber along Which the hot products of combustion travel, tracks at the bottom of the furnace chamber along which the workpieces travel through the furnace chamber, and a vertically adjustable baifle or baffles depending from the roof of the furnace, substantially as described.

5. A heating furnace having a chamber along which the hot products of combustion travel, elevated tracks along Which the Workpieces travel through the 'furnace chamber, and a bafle or bales at the top of thel furnace chamber, substantially as described- 6. A heating furnace having a chamberi` along which the hot products of combustion.

travel, elevated tracks along which the Workpieces travel through the ,furnace chamber, and a vertically adjustable baiie 0r baflies at the top of the furnace chamber, substantially as described. Y

In testimony whereof, ,I have hereunto set my hand.

NicKo'Las r. Estan. 

